Evaluación agronómica de cuatro híbridos de maíz (Zea mays L.) con dos niveles de fertilización con base en N,P,K,S
Fecha
2016
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Facultad de Ciencias Agrarias Universidad de Guayaquil
Resumen
La presente investigación se llevó a cabo en la parroquia San Juan, Los Ríos, en la época seca del año 2014. Los objetivos fueron: a) Evaluar el comportamiento agronómico de cuatro híbridos de maíz; b) Determinar la respuesta de cuatro híbridos de maíz a dosis altas y bajas de fertilización con base en N, P, K y S; y, c) Realizar un análisis económico de los tratamientos en estudio. Conclusiones: a) Los híbridos Triunfo y Trueno presentaron los mayores promedios de altura de planta, de inserción de mazorca, diámetro del tallo, longitud de mazorca con y sin brácteas, diámetro de la mazorca con y sin brácteas y peso de la mazorca con y sin brácteas; b) En el factor niveles de fertilización combinada con N, P2O5, K2O y S (120-40-60-40 y 240-80-120-80), las variables altura de planta, altura de inserción de la mazorca, diámetro del tallo, longitud de la mazorca con y sin brácteas, diámetro de la mazorca con y sin bráctea y peso de la mazorca con y sin brácteas fueron iguales estadísticamente, superiores al tratamiento testigo absoluto; c) Las variables destacadas por su promedio más alto fueron diámetro del tallo H3-F3 (Triunfo + 240-80-120-80) y H4-F3 (Trueno + 240-80-120-80); longitud de la mazorca con brácteas H4-F2 (Trueno + 120-40-60-40), y, diámetro de la mazorca con brácteas H3-F3 (Triunfo + 240-80-120-80).
This research was carried out on the farm "House of Tejas" located in the parish of San Juan de los Rios province. In the dry season of 2014. The objectives were: a) evaluate the agronomic performance of four corn hybrids; b) Determine the response of four hybrid corn at high and low doses of fertilization based on N, P, K and S; c) Perform an economic analysis of the treatments under study. Four hybrid corn DK-1596, DK-7008, Triunfo and Trueno with three levels of N, P2O5 and K2O (0-0-0-0, 120-40-60-40 and was used 240-80-120- 80) whose combinations of treatments were 12, block design was completely randomized factorial arrangement 4 x 3, with four replications, comparing the means of the treatments performed by the Duncan test at 5% probability. In total 15 agronomic traits were evaluated. He concluded: a) The Triumph and Thunder hybrid had the highest average plant height, insertion of ear, stem diameter, ear length with and without bracts, ear diameter with and without bract and ear weight with and without bract; b) In the combined levels of N fertilization factor, P2O5, K2O and S (120-40-60-40 and 240-80-120-80)
This research was carried out on the farm "House of Tejas" located in the parish of San Juan de los Rios province. In the dry season of 2014. The objectives were: a) evaluate the agronomic performance of four corn hybrids; b) Determine the response of four hybrid corn at high and low doses of fertilization based on N, P, K and S; c) Perform an economic analysis of the treatments under study. Four hybrid corn DK-1596, DK-7008, Triunfo and Trueno with three levels of N, P2O5 and K2O (0-0-0-0, 120-40-60-40 and was used 240-80-120- 80) whose combinations of treatments were 12, block design was completely randomized factorial arrangement 4 x 3, with four replications, comparing the means of the treatments performed by the Duncan test at 5% probability. In total 15 agronomic traits were evaluated. He concluded: a) The Triumph and Thunder hybrid had the highest average plant height, insertion of ear, stem diameter, ear length with and without bracts, ear diameter with and without bract and ear weight with and without bract; b) In the combined levels of N fertilization factor, P2O5, K2O and S (120-40-60-40 and 240-80-120-80)
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CULTIVO DE MAIZ, RIEGO, FERTILIZACION